/*
 * Licensed to STRATIO (C) under one or more contributor license agreements.
 * See the NOTICE file distributed with this work for additional information
 * regarding copyright ownership.  The STRATIO (C) licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.stratio.cassandra.lucene.util;

import org.apache.cassandra.db.partitions.PartitionIterator;
import org.apache.cassandra.db.rows.RowIterator;

import java.util.Iterator;
import java.util.List;

/**
 * {@link PartitionIterator} composed by a list of {@link SimpleRowIterator}s.
 *
 * @author Andres de la Pena {@literal <adelapena@stratio.com>}
 */
public class SimplePartitionIterator implements PartitionIterator {

    private final Iterator<SimpleRowIterator> iterator;

    /**
     * Constructor taking the {@link SimplePartitionIterator} to be iterated.
     *
     * @param rows the rows to be iterated
     */
    public SimplePartitionIterator(List<SimpleRowIterator> rows) {
        iterator = rows.iterator();
    }

    /** {@inheritDoc} */
    @Override
    public void close() {
        iterator.forEachRemaining(RowIterator::close);
    }

    /** {@inheritDoc} */
    @Override
    public boolean hasNext() {
        return iterator.hasNext();
    }

    /** {@inheritDoc} */
    @Override
    public RowIterator next() {
        return iterator.next();
    }
}
